It's been ages since I read it, but I think that Jared Diamond's book 'Collapse' explains a bit about the island and the statues construction (his main focus is

It's been ages since I read it, but I think that Jared Diamond's book 'Collapse' explains a bit about the island and the statues construction (his main focus is on the self-destructive cycles of behavior of the population however). Also, I thought this was old news? I'm sure I have seen that photo quite a while ago.